Method and apparatus for the optical measurement of fluid flow

Details Method and apparatus for the optical measurement of fluid flow Method and apparatus for the optical measurement of fluid flow

1984-12-21

1987-11-17

Buczinski, Stephen C.

Optics: measuring and testing

Velocity or velocity/height measuring

With light detector

7386106, G01P 336, G01P 522

Patent

active

047071303

ABSTRACT:
Method and apparatus for optical measurement of fluid flow in which particles are injected into the fluid flow to permit accurate velocity measurements to be made thereof between two laser beams through measuring windows and to obtain a velocity profile. One beam is fixed and provides indication of start event, and the other beam is moved in discrete angular steps around the first beam in oscillatory fashion to provide indication of stop events. The sum of the particles passing the start beam and the sum of the particles subsequently passing the stop beam are correlated by electronic evaluation circuitry.

REFERENCES:
patent: 3320804 (1967-05-01), Halberstam
patent: 3503680 (1970-03-01), Schenkerman
patent: 3558898 (1971-01-01), Block
patent: 3941477 (1976-03-01), Schodl
patent: 4201467 (1980-05-01), Hartmann et al.
patent: 4206999 (1980-06-01), Keller
patent: 4516851 (1985-05-01), Parker et al.
J. Sabater, "Velocimetrie Laser Par Correlation," J. Optics (Paris), 1980, pp. 225-229.

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